/*---------------------------------------------------------------------------
  Daan Leijen (c) 2016

  This is based on the wcwidth library released under the MIT license.
  https://github.com/mycoboco/wcwidth.js

  It is just repackaged to be one file and using amdefine style modules
-----------------------------------------------------------------------------

Copyright (C) 2012-2014 by Jun Woong and Tim Oxley.

This package is a javascript porting of wcwidth() implementation by Markus Kuhn.

Permission is hereby granted, free of charge, to any person obtaining a copy of this 
software and associated documentation files (the "Software"), to deal in the Software 
without restriction, including without limitation the rights to use, copy, modify, merge, 
publish, distribute, sublicense, and/or sell copies of the Software, and to permit 
persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies 
or substantial portions of the Software.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE 
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------*/

if (typeof define !== 'function') { var define = require('amdefine')(module) }
define([],function() {
'use strict';

/*
 *  wcwidth.js: a javascript porting of Markus Kuhn's wcwidth()
 */

/*
 *  look-up table for non-spacing characters
 */
var combining = [
    [ 0x0300, 0x036F ], [ 0x0483, 0x0486 ], [ 0x0488, 0x0489 ],
    [ 0x0591, 0x05BD ], [ 0x05BF, 0x05BF ], [ 0x05C1, 0x05C2 ],
    [ 0x05C4, 0x05C5 ], [ 0x05C7, 0x05C7 ], [ 0x0600, 0x0603 ],
    [ 0x0610, 0x0615 ], [ 0x064B, 0x065E ], [ 0x0670, 0x0670 ],
    [ 0x06D6, 0x06E4 ], [ 0x06E7, 0x06E8 ], [ 0x06EA, 0x06ED ],
    [ 0x070F, 0x070F ], [ 0x0711, 0x0711 ], [ 0x0730, 0x074A ],
    [ 0x07A6, 0x07B0 ], [ 0x07EB, 0x07F3 ], [ 0x0901, 0x0902 ],
    [ 0x093C, 0x093C ], [ 0x0941, 0x0948 ], [ 0x094D, 0x094D ],
    [ 0x0951, 0x0954 ], [ 0x0962, 0x0963 ], [ 0x0981, 0x0981 ],
    [ 0x09BC, 0x09BC ], [ 0x09C1, 0x09C4 ], [ 0x09CD, 0x09CD ],
    [ 0x09E2, 0x09E3 ], [ 0x0A01, 0x0A02 ], [ 0x0A3C, 0x0A3C ],
    [ 0x0A41, 0x0A42 ], [ 0x0A47, 0x0A48 ], [ 0x0A4B, 0x0A4D ],
    [ 0x0A70, 0x0A71 ], [ 0x0A81, 0x0A82 ], [ 0x0ABC, 0x0ABC ],
    [ 0x0AC1, 0x0AC5 ], [ 0x0AC7, 0x0AC8 ], [ 0x0ACD, 0x0ACD ],
    [ 0x0AE2, 0x0AE3 ], [ 0x0B01, 0x0B01 ], [ 0x0B3C, 0x0B3C ],
    [ 0x0B3F, 0x0B3F ], [ 0x0B41, 0x0B43 ], [ 0x0B4D, 0x0B4D ],
    [ 0x0B56, 0x0B56 ], [ 0x0B82, 0x0B82 ], [ 0x0BC0, 0x0BC0 ],
    [ 0x0BCD, 0x0BCD ], [ 0x0C3E, 0x0C40 ], [ 0x0C46, 0x0C48 ],
    [ 0x0C4A, 0x0C4D ], [ 0x0C55, 0x0C56 ], [ 0x0CBC, 0x0CBC ],
    [ 0x0CBF, 0x0CBF ], [ 0x0CC6, 0x0CC6 ], [ 0x0CCC, 0x0CCD ],
    [ 0x0CE2, 0x0CE3 ], [ 0x0D41, 0x0D43 ], [ 0x0D4D, 0x0D4D ],
    [ 0x0DCA, 0x0DCA ], [ 0x0DD2, 0x0DD4 ], [ 0x0DD6, 0x0DD6 ],
    [ 0x0E31, 0x0E31 ], [ 0x0E34, 0x0E3A ], [ 0x0E47, 0x0E4E ],
    [ 0x0EB1, 0x0EB1 ], [ 0x0EB4, 0x0EB9 ], [ 0x0EBB, 0x0EBC ],
    [ 0x0EC8, 0x0ECD ], [ 0x0F18, 0x0F19 ], [ 0x0F35, 0x0F35 ],
    [ 0x0F37, 0x0F37 ], [ 0x0F39, 0x0F39 ], [ 0x0F71, 0x0F7E ],
    [ 0x0F80, 0x0F84 ], [ 0x0F86, 0x0F87 ], [ 0x0F90, 0x0F97 ],
    [ 0x0F99, 0x0FBC ], [ 0x0FC6, 0x0FC6 ], [ 0x102D, 0x1030 ],
    [ 0x1032, 0x1032 ], [ 0x1036, 0x1037 ], [ 0x1039, 0x1039 ],
    [ 0x1058, 0x1059 ], [ 0x1160, 0x11FF ], [ 0x135F, 0x135F ],
    [ 0x1712, 0x1714 ], [ 0x1732, 0x1734 ], [ 0x1752, 0x1753 ],
    [ 0x1772, 0x1773 ], [ 0x17B4, 0x17B5 ], [ 0x17B7, 0x17BD ],
    [ 0x17C6, 0x17C6 ], [ 0x17C9, 0x17D3 ], [ 0x17DD, 0x17DD ],
    [ 0x180B, 0x180D ], [ 0x18A9, 0x18A9 ], [ 0x1920, 0x1922 ],
    [ 0x1927, 0x1928 ], [ 0x1932, 0x1932 ], [ 0x1939, 0x193B ],
    [ 0x1A17, 0x1A18 ], [ 0x1B00, 0x1B03 ], [ 0x1B34, 0x1B34 ],
    [ 0x1B36, 0x1B3A ], [ 0x1B3C, 0x1B3C ], [ 0x1B42, 0x1B42 ],
    [ 0x1B6B, 0x1B73 ], [ 0x1DC0, 0x1DCA ], [ 0x1DFE, 0x1DFF ],
    [ 0x200B, 0x200F ], [ 0x202A, 0x202E ], [ 0x2060, 0x2063 ],
    [ 0x206A, 0x206F ], [ 0x20D0, 0x20EF ], [ 0x302A, 0x302F ],
    [ 0x3099, 0x309A ], [ 0xA806, 0xA806 ], [ 0xA80B, 0xA80B ],
    [ 0xA825, 0xA826 ], [ 0xFB1E, 0xFB1E ], [ 0xFE00, 0xFE0F ],
    [ 0xFE20, 0xFE23 ], [ 0xFEFF, 0xFEFF ], [ 0xFFF9, 0xFFFB ],
    [ 0x10A01, 0x10A03 ], [ 0x10A05, 0x10A06 ], [ 0x10A0C, 0x10A0F ],
    [ 0x10A38, 0x10A3A ], [ 0x10A3F, 0x10A3F ], [ 0x1D167, 0x1D169 ],
    [ 0x1D173, 0x1D182 ], [ 0x1D185, 0x1D18B ], [ 0x1D1AA, 0x1D1AD ],
    [ 0x1D242, 0x1D244 ], [ 0xE0001, 0xE0001 ], [ 0xE0020, 0xE007F ],
    [ 0xE0100, 0xE01EF ]
]

var defaultOpts = {
    nul:     0,
    control: 0
}


function bisearch(ucs) {
  var min = 0
  var max = combining.length - 1
  var mid

  if (ucs < combining[0][0] || ucs > combining[max][1]) return false

  while (max >= min) {
      mid = Math.floor((min + max) / 2)
      if (ucs > combining[mid][1]) min = mid + 1
      else if (ucs < combining[mid][0]) max = mid - 1
      else return true
  }

  return false
}


function wcwidth(ucs, opts) {
    // test for 8-bit control characters
    if (ucs === 0) return opts.nul
    if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0)) return opts.control

    // binary search in table of non-spacing characters
    if (bisearch(ucs)) return 0

    // if we arrive here, ucs is not a combining or C0/C1 control character
    return 1 +
        (ucs >= 0x1100 &&
         (ucs <= 0x115f ||                       // Hangul Jamo init. consonants
          ucs == 0x2329 || ucs == 0x232a ||
          (ucs >= 0x2e80 && ucs <= 0xa4cf &&
           ucs != 0x303f) ||                     // CJK ... Yi
          (ucs >= 0xac00 && ucs <= 0xd7a3) ||    // Hangul Syllables
          (ucs >= 0xf900 && ucs <= 0xfaff) ||    // CJK Compatibility Ideographs
          (ucs >= 0xfe10 && ucs <= 0xfe19) ||    // Vertical forms
          (ucs >= 0xfe30 && ucs <= 0xfe6f) ||    // CJK Compatibility Forms
          (ucs >= 0xff00 && ucs <= 0xff60) ||    // Fullwidth Forms
          (ucs >= 0xffe0 && ucs <= 0xffe6) ||
          (ucs >= 0x20000 && ucs <= 0x2fffd) ||
          (ucs >= 0x30000 && ucs <= 0x3fffd)));
}


function wcswidth(str, opts) {
    var h, l
    var s = 0, n

    if (typeof str !== 'string') return wcwidth(str, opts)

    for (var i = 0; i < str.length; i++) {
        h = str.charCodeAt(i)
        if (h >= 0xd800 && h <= 0xdbff) {
            l = str.charCodeAt(++i)
            if (l >= 0xdc00 && l <= 0xdfff) h = (h-0xd800)*0x400 + (l-0xdc00)+0x10000
            else i--
        }
        n = wcwidth(h, opts)
        if (n < 0) return -1
        s += n
    }

    return s
}


return {
  wcwidth : function(str,opts) {
    opts = opts || {};
    opts.nul = opts.nul || defaultOpts.nul;
    opts.control = opts.control || defaultOpts.control; 
    return wcswidth(str,opts);
  },
}

});